| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310324000 | Diaphragm | 12 |
| 20090039737 | METHOD OF FABRICATING CASE, PIEZOELECTRIC OSCILLATOR, OSCILLATOR, ELECTRONIC APPLIANCE, AND RADIO CLOCK - A method of fabricating a case accommodating a piezoelectric vibrating piece therein in a piezoelectric oscillator including the piezoelectric vibrating piece, including the steps of: applying deep drawing to a conductive plate member to shape the plate member in a nearly cylindrical shape with a bottom; pressing an inner surface of a bottom part of the plate member by a punch for step drawing while an outer surface of the bottom part is being abutted against a surface including an opening of a hole of a die having an inner diameter smaller than the outer diameter of the bottom part, whereby a projecting portion is formed on the outer surface of the bottom part; and cutting the plate member having the projecting portion at a predetermined position on the opening side thereof, whereby a case in a nearly cylindrical shape with a bottom having the projecting portion is obtained. | 02-12-2009 |
| 20090079300 | ULTRASONIC DEVICE WITH A DISK-SHAPED RESONATOR - The present invention refers to an ultrasonic device comprising an ultrasound transducer; and a disk-shaped metallic low-frequency ultrasound (NFLUS) resonator being mechanically connected with the ultrasound transducer on one side of the resonator; a container with an opening on its bottom side and being arranged on the other side of the disk-shaped resonator such that the opening is facing the disk-shaped resonator; an elastic sealing element arranged between the disk-shaped resonator and the container for sealing the container around the opening; and means for supplying a pressing force such that the container is tightened on the resonator during ultrasonication, but can be can be repeatedly disassembled and assembled after ultrasonication. | 03-26-2009 |
| 20090115288 | PIEZOELECTRIC LOUDSPEAKER - A full range loudspeaker, comprising a frame with a membrane secured onto said frame and a piezoelectric actuator attached on said membrane and able to be driven over the full audible frequency range. | 05-07-2009 |
| 20090146531 | Manufacturing Process For Thin Film Bulk Acoustic Resonator (FBAR) Filters - Method for fabricating an acoustical resonator on a substrate having a top surface. First, a depression in said top surface is generated. Next, the depression is filled with a sacrificial material. The filled depression has an upper surface level with said top surface of said substrate. Next, a first electrode is deposited on said upper surface. Then, a layer of piezoelectric material is deposited on said first electrode. A second electrode is deposited on the layer of piezoelectric material using a mass load lift-off process. | 06-11-2009 |
| 20090146532 | Liquid Transporting Apparatus and Piezoelectric Actuator - First and second piezoelectric thin layers are arranged on an upper surface of a vibration plate which covers a pressure chamber. An individual electrode is formed on an upper surface, of the second piezoelectric thin layer, at a portion facing the pressure chamber, and a connecting terminal to be connected to a FPC wire via solder is arranged to be separated from the individual electrode at a portion not facing the pressure chamber. A common electrode is formed on a lower surface of the first piezoelectric thin layer to face the pressure chamber. A connecting portion which faces the individual electrode and the connecting terminal and does not face the common electrode is formed between the first and the second piezoelectric thin layers. The individual electrode, the connecting terminal, and the connecting portion are connected via an electroconductive material filled in communicating passages formed in the second piezoelectric thin layer. | 06-11-2009 |
| 20090236939 | HIGH-PERFORMANCE ELECTROACTIVE POLYMER TRANSDUCERS - Transducers employing electroactive polymer films are disclosed. | 09-24-2009 |
| 20100066206 | Bonding On Silicon Substrate Having A Groove - A method and apparatus for bonding on a silicon substrate are disclosed. An apparatus includes a membrane having a membrane surface, a groove in the membrane surface, a transducer having a transducer surface substantially parallel to the membrane surface, and an adhesive connecting the membrane surface to the transducer surface. The groove can be configured to permit flow of adhesive into and through the groove while minimizing voids or air gaps that could result from incomplete filling of the groove. Multiple grooves can be formed in the membrane surface and can be of uniform depth. | 03-18-2010 |
| 20100072860 | PIEZOELECTRIC MICROSPEAKER AND METHOD OF FABRICATING THE SAME - Provided is a method of fabricating a piezoelectric microspeaker. According to the method, drive units having a piezoelectric layer and an electrode are symmetrically formed so as to be disposed over and under a diaphragm, respectively. When a thin conductive layer is used as the diaphragm, the diaphragm can be used as a common electrode. On the other hand, when a thin non-conductive layer is used as the diaphragm, a common electrode is necessary in each of the drive units. | 03-25-2010 |
| 20100277040 | THIN FILM DETECTOR FOR PRESENCE DETECTION - A transducer ( | 11-04-2010 |
| 20110204749 | SHORT RANGE ULTRASONIC DEVICE WITH BROADBEAM ULTRASONIC TRANSDUCERS - An apparatus comprises a first transducer support configured to receive a first transducer in a first opening. A face of the first face of the transducer is located in a first plane. The apparatus also comprises a second transducer support configured to receive a second transducer in a second opening. A face of the second transducer is located in a second plane substantially parallel to the first plane. | 08-25-2011 |
| 20130002093 | PIEZOELECTRIC VIBRATION MODULE - Disclosed herein is a piezoelectric vibration module including: a piezoelectric element repeatedly extended and compressed according to application of external power to generate vibration force; a vibration plate having the piezoelectric element coupled to one surface thereof and repeatedly extended and compressed integrally with the piezoelectric element to transfer the vibration force of the piezoelectric element to an external component; a weight body having a central portion coupled to the other side of the vibration plate in order to increase the vibration force of the piezoelectric element; and a coupling member fixedly coupling the central portion of the weight body and the vibration plate to each other. | 01-03-2013 |
| 20220141594 | PIEZOELECTRIC VIBRATION PLATE AND PIEZOELECTRIC SOUND GENERATING COMPONENT - A piezoelectric vibration plate includes a base that includes a central portion and a circumferential portion and has conductivity. A piezoelectric portion is provided on the central portion that performs bending vibration in a manner to reciprocate between both sides in a thickness direction of the base when a voltage is applied to the piezoelectric portion. The base includes at least one penetration portion positioned between the central portion and the circumferential portion, and at least one coupling portion that couples the central portion to the circumferential portion. The at least one coupling portion is arranged on a farthest position from a center, at which maximum displacement is generated in the bending vibration, of the central portion. | 05-05-2022 |
